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Principal Machine Learning Engineer RAI

Microsoft


Job Location:

Redmond, WA - USA

Yearly Salary: USD 142800 - 274800
Posted: 21 October 2026 (4 hours ago)
Application Deadline: 18 January 2027
Vacancies: 1 Vacancy

Department:

Software Engineering

Job Summary

Overview

The Principal Machine Learning Engineer will design build deploy and scale production machine learning systems. This is a deeply technical hands-on role for an engineer with a strong track record of transforming machine learning models and research innovations into reliable product capabilities.

The ideal candidate has experience building systems across the machine learning lifecycle including data processing model training evaluation inference and production operation. They will partner closely with applied scientists and software engineers to solve complex engineering problems spanning models data infrastructure and services.

As a Principal Machine Learning Engineer this person will build critical system components while driving architecture and technical direction across broader initiatives. They will develop reusable capabilities that support multiple models and workloads make sound tradeoffs across model quality scalability reliability performance and cost and help raise the engineering standards of the broader team.

This role is particularly suited to someone passionate about AI safety and Responsible AI and motivated to build systems that help advanced AI capabilities operate safely reliably and responsibly.

Microsofts mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset innovate to empower others and collaborate to realize our shared goals. Each day we build on our values of respect integrity and accountability to create a culture of inclusion where everyone can thrive at work and beyond.



Responsibilities
  • Design and build large-scale systems for machine learning training evaluation inference and production operation.
  • Transform machine learning models and research innovations into reliable scalable product capabilities.
  • Develop reusable infrastructure services and components that support multiple models and workloads.
  • Solve complex engineering problems involving scalability performance reliability and efficiency.
  • Partner with applied scientists and software engineers to integrate modeling advances into production systems.
  • Drive architectural decisions while remaining hands-on in the design and implementation of critical components.
  • Incorporate security privacy safety and Responsible AI considerations throughout system design and development.
  • Provide technical direction and mentorship that raises the engineering bar across the team.


Qualifications

Required Qualifications

  • Bachelors Degree in Computer Science or related technical field AND 6 years technical engineering experience with coding in languages including but not limited to C C C# Java JavaScript or Python OR equivalent experience.

Other Requirements

Ability to meet Microsoft customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings:

  • Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years

Preferred Qualifications:

  • Masters or Doctorate degree in Computer Science or a related technical field with a focus on machine learning or related areas AND 7 years of technical engineering experience or equivalent experience.
  • Experience building machine learning infrastructure or platforms that support multiple models teams or workloads.
  • Experience driving architecture across complex cross-team engineering initiatives.
  • Demonstrated interest in AI safety and Responsible AI including building systems that support the safe and responsible development or deployment of AI capabilities.
  • Demonstrated experience deploying and scaling machine learning models and pipelines in production.
  • Experience with machine learning systems distributed systems software architecture and system design.
  • Proven ability to build and operate systems that support large-scale machine learning workloads.
  • Ability to solve technically ambiguous problems and personally implement critical systems while influencing broader technical direction.


Software Engineering IC5 - The typical base pay range for this role across the U.S. is USD $142800 - $274800 per year. There is a different range applicable to specific work locations within the San Francisco Bay area and New York City metropolitan area and the base pay range for this role in those locations is USD $188000 - $304200 per year.

Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here:
position will be open for a minimum of 5 days with applications accepted on an ongoing basis until the position is filled.



Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age ancestry citizenship color family or medical care leave gender identity or expression genetic information immigration status marital status medical condition national origin physical or mental disability political affiliation protected veteran or military status race ethnicity religion sex (including pregnancy) sexual orientation or any other characteristic protected by applicable local laws regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process read more about requesting accommodations.


Required Experience:

IC